From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751697AbaEUCPP (ORCPT ); Tue, 20 May 2014 22:15:15 -0400 Received: from mail-bn1blp0190.outbound.protection.outlook.com ([207.46.163.190]:43273 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751542AbaEUCOz (ORCPT ); Tue, 20 May 2014 22:14:55 -0400 From: Huang Shijie To: CC: , , , Huang Shijie Subject: [PATCH 2/2] serial: imx: remove the redandunt code Date: Wed, 21 May 2014 08:56:29 +0800 Message-ID: <1400633789-31979-2-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.8 In-Reply-To: <1400633789-31979-1-git-send-email-b32955@freescale.com> References: <1400633789-31979-1-git-send-email-b32955@freescale.com> X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:192.88.158.2;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(6009001)(199002)(189002)(81156002)(20776003)(4396001)(76176999)(93916002)(50986999)(19580395003)(92726001)(85852003)(87286001)(69596002)(83322001)(50226001)(33646001)(68736004)(92566001)(79102001)(50466002)(77096999)(48376002)(44976005)(6806004)(87936001)(36756003)(84676001)(64706001)(89996001)(88136002)(83072002)(31966008)(77982001)(99396002)(47776003)(19580405001)(74502001)(81542001)(77156001)(62966002)(97736001)(102836001)(76482001)(80022001)(74662001)(46102001)(21056001)(81342001)(42262001);DIR:OUT;SFP:;SCL:1;SRVR:BLUPR03MB422;H:az84smr01.freescale.net;FPR:;MLV:sfv;PTR:InfoDomainNonexistent;A:1;MX:1;LANG:en; MIME-Version: 1.0 Content-Type: text/plain X-Forefront-PRVS: 0218A015FA Authentication-Results: spf=fail (sender IP is 192.88.158.2) smtp.mailfrom=shijie.huang@freescale.com; X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In the imx_startup(), we will reset the uart port which will reset all the FIFOs, including the URXD. So the code to clear the RX FIFO is redandunt. Just remove it. Signed-off-by: Huang Shijie --- drivers/tty/serial/imx.c | 9 --------- 1 files changed, 0 insertions(+), 9 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 64901d0..febf400 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1161,15 +1161,6 @@ static int imx_startup(struct uart_port *port) temp |= UCR2_IRTS; writel(temp, sport->port.membase + UCR2); - if (USE_IRDA(sport)) { - /* clear RX-FIFO */ - int i = 64; - while ((--i > 0) && - (readl(sport->port.membase + URXD0) & URXD_CHARRDY)) { - barrier(); - } - } - if (!is_imx1_uart(sport)) { temp = readl(sport->port.membase + UCR3); temp |= IMX21_UCR3_RXDMUXSEL; -- 1.7.8